diff options
Diffstat (limited to 'llvm/lib/Target/ARM/ARMInstrInfo.td')
| -rw-r--r-- | llvm/lib/Target/ARM/ARMInstrInfo.td | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/llvm/lib/Target/ARM/ARMInstrInfo.td b/llvm/lib/Target/ARM/ARMInstrInfo.td index 53be167..10d4cd5 100644 --- a/llvm/lib/Target/ARM/ARMInstrInfo.td +++ b/llvm/lib/Target/ARM/ARMInstrInfo.td @@ -6546,23 +6546,25 @@ def KCFI_CHECK_ARM : PseudoInst<(outs), (ins GPR:$ptr, i32imm:$type), NoItinerary, []>, Sched<[]>, Requires<[IsARM]> { - let Size = 28; // 7 instructions (bic, ldr, 4x eor, beq, udf) + let Size = 40; // worst-case 10 instructions @ 4 bytes each + // (push, bic, ldr, 4x eor, pop, beq, udf) } def KCFI_CHECK_Thumb2 : PseudoInst<(outs), (ins GPR:$ptr, i32imm:$type), NoItinerary, []>, Sched<[]>, Requires<[IsThumb2]> { - let Size = - 32; // worst-case 9 instructions (push, bic, ldr, 4x eor, pop, beq.w, udf) + let Size = 34; // worst-case (push.w[2], bic[4], ldr[4], 4x eor[16], pop.w[2], + // beq.w[4], udf[2]) } def KCFI_CHECK_Thumb1 : PseudoInst<(outs), (ins GPR:$ptr, i32imm:$type), NoItinerary, []>, Sched<[]>, Requires<[IsThumb1Only]> { - let Size = 50; // worst-case 25 instructions (pushes, bic helper, type - // building, cmp, pops) + let Size = 38; // worst-case 19 instructions @ 2 bytes each + // (2x push, 3x bic-helper, subs+ldr, 13x type-building, cmp, + // 2x pop, beq, bkpt) } //===----------------------------------------------------------------------===// |